Another Piece Of The Jigsaw

I constantly come across moments in my life where I find myself thinking: "Ah right, now I get it." These moments usually centre around trivialities, but I love the little sense of satisfaction and achievement I get whenever it happens, like I've just solved an ancient mystery of life.
For example, I was watching an old movie last night called The Killing Of A Chinese Bookie directed by John Cassavetes. There is a scene in the movie where the main character Cosmo, played by the brilliant Ben Gazzara, is talking on the phone to his club's bartender and shouting: "Are there letters on the wall that say p-a-r? There's another card that says moon. Well, what's he singing? Like being hit by a bolt of lightening I instantly realised I had heard this phrase before and it wasn't long until I had figured it out.
In the music video for David Gray's song Sail Away, (where David is staggering home from the pub during a typical Saturday night), there is a scene where a man on the street with a broken nose is talking on his mobile asking: "Are there letters on the wall which read p-a-r? There's another card that says moon. Well, what's he singing?" Since that video first aired I always wondered where that phrase came from and now nearly ten years later I discovered the answer. Just another little piece of the jigsaw.